gstreamer/docs/plugins/inspect/plugin-filter.xml

<plugin>
  <name>filter</name>
  <description>IIR audio filter element</description>
  <filename>../../gst/filter/.libs/libgstfilter.so</filename>
  <basename>libgstfilter.so</basename>
  <version>0.10.10</version>
  <license>LGPL</license>
  <source>gst-plugins-bad</source>
  <package>GStreamer Bad Plug-ins source release</package>
  <origin>Unknown package origin</origin>
  <elements>
    <element>
      <name>iir</name>
      <longname>Infinite Impulse Response (IIR) filter</longname>
      <class>Filter/Effect/Audio</class>
      <description>IIR filter based on vorbis code</description>
      <author>Monty &lt;monty@xiph.org&gt;, Thomas Vander Stichele &lt;thomas at apestaart dot org&gt;, Dreamlab Technologies Ltd. &lt;mathis.hofer@dreamlab.net&gt;</author>
      <pads>
        <caps>
          <name>sink</name>
          <direction>sink</direction>
          <presence>always</presence>
          <details>audio/x-raw-float, rate=(int)[ 1, 2147483647 ], channels=(int)[ 1, 2147483647 ], endianness=(int)1234, width=(int)32</details>
        </caps>
        <caps>
          <name>src</name>
          <direction>source</direction>
          <presence>always</presence>
          <details>audio/x-raw-float, rate=(int)[ 1, 2147483647 ], channels=(int)[ 1, 2147483647 ], endianness=(int)1234, width=(int)32</details>
        </caps>
      </pads>
    </element>
  </elements>
</plugin>